Monsanto and Eli Lilly have successfully blocked consumers' right to know about factory-farm dairy production by concealing the use of their genetically engineered bovine growth hormone, a.k.a. rBGH or rBST.

Still, when it comes to voluntary labels on non-GMO food, consumers are winning!

The first blow to biotech was in 2010 when a Sixth Circuit court ruled that milk produced with synthetic hormones is different than milk produced without it and struck down a Ohio rule that would have removed "rBGH-free" labels from dairy products. The court found:

- A compositional difference does exist between milk from untreated cows and conventional milk.

- The use of rBGH (rbST) in milk production has been shown to elevate the levels of insulin-like growth factor 1 (IGF-1), a naturally occurring hormone that in high levels is linked to several types of cancers, among other things.

- rBGH (rbST) use induces an unnatural period of milk production during a cow's "negative energy phase." Milk produced during this stage is considered to be low quality due to its increased fat content and its decreased level of proteins.

- Milk from rBGH-injected cows contains higher somatic cell counts, which makes the milk turn sour more quickly and is another indicator of poor milk quality.